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  2. ISO 8601 - Wikipedia

    en.wikipedia.org/wiki/ISO_8601

    [17] The separator used between date values (year, month, week, and day) is the hyphen, while the colon is used as the separator between time values (hours, minutes, and seconds). For example, the 6th day of the 1st month of the year 2009 may be written as "2009-01-06" in the extended format or as "20090106" in the basic format without ambiguity.

  3. Unit of time - Wikipedia

    en.wikipedia.org/wiki/Unit_of_time

    About 17 minutes. hour: 60 min: deciday 0.1 d (10 % of a day) 2.4 hours, or 144 minutes. One-tenth of a day is 1 dd (deciday), also called "gēng" in traditional Chinese timekeeping. day: 24 h: Longest unit used on stopwatches and countdowns. The SI day is exactly 86 400 seconds. week: 7 d: Historically sometimes also called "sennight". decaday

  4. Wikipedia:Age calculation templates - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Age_calculation...

    {} – works with "fuzzy" or ambiguous dates {{Birth date and age}} – used on most biographical entries {{Birth date and age2}} – calculates age at a specified date {{Birth based on age as of date}} – used when a reference mentions the age of a person as of the date of the reference's publication {{Birth year and age}} {}

  5. Date and time representation by country - Wikipedia

    en.wikipedia.org/wiki/Date_and_time...

    The little-endian format (day, month, year; 1 June 2022) is the most popular format worldwide, followed by the big-endian format (year, month, day; 2006 June 1). Dates may be written partly in Roman numerals (i.e. the month) [citation needed] or written out partly or completely in words in the local language.

  6. Metric time - Wikipedia

    en.wikipedia.org/wiki/Metric_time

    16.7 minutes (or 16 minutes and 40 seconds) 10 6: megasecond: 1 000 000: 11.6 days (or 11 days, 13 hours, 46 minutes and 40 seconds) 10 9: gigasecond: 1 000 000 000: 31.7 years (or 31 years, 252 days, 1 hour, 46 minutes, 40 seconds, assuming that there are 7 leap years in the interval)

  7. Military designation of days and hours - Wikipedia

    en.wikipedia.org/wiki/Military_designation_of...

    L-Hour The specific time at which deployment for an operation commences. (US) L-Day For "Landing Day", 1 April 1945, the day Operation Iceberg (the invasion of Okinawa) began. [5] M-Day The day on which mobilization commences or is due to commence. (NATO) N-Day The unnamed day an active duty unit is notified for deployment or redeployment. (US ...

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    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Julian day - Wikipedia

    en.wikipedia.org/wiki/Julian_day

    The Julian date (JD) of any instant is the Julian day number plus the fraction of a day since the preceding noon in Universal Time. Julian dates are expressed as a Julian day number with a decimal fraction added. [8] For example, the Julian Date for 00:30:00.0 UT January 1, 2013, is 2 456 293.520 833. [9]